Vulnerability-Lookup

FKIE_CVE-2021-47457

Vulnerability from fkie_nvd - Published: 2024-05-22 07:15 - Updated: 2026-06-17 04:17

Severity

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: can: isotp: isotp_sendmsg(): add result check for wait_event_interruptible() Using wait_event_interruptible() to wait for complete transmission, but do not check the result of wait_event_interruptible() which can be interrupted. It will result in TX buffer has multiple accessors and the later process interferes with the previous process. Following is one of the problems reported by syzbot. ============================================================= WARNING: CPU: 0 PID: 0 at net/can/isotp.c:840 isotp_tx_timer_handler+0x2e0/0x4c0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.13.0-rc7+ #68 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1 04/01/2014 RIP: 0010:isotp_tx_timer_handler+0x2e0/0x4c0 Call Trace: <IRQ> ? isotp_setsockopt+0x390/0x390 __hrtimer_run_queues+0xb8/0x610 hrtimer_run_softirq+0x91/0xd0 ? rcu_read_lock_sched_held+0x4d/0x80 __do_softirq+0xe8/0x553 irq_exit_rcu+0xf8/0x100 sysvec_apic_timer_interrupt+0x9e/0xc0 </IRQ> asm_sysvec_apic_timer_interrupt+0x12/0x20 Add result check for wait_event_interruptible() in isotp_sendmsg() to avoid multiple accessers for tx buffer.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/053bc12df0d6097c1126d0e14fa778a0a8faeb64	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9acf636215a6ce9362fe618e7da4913b8bfe84c8	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a76abedd2be3926d6deba236a935c7f98abf9110	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/053bc12df0d6097c1126d0e14fa778a0a8faeb64	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/9acf636215a6ce9362fe618e7da4913b8bfe84c8	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/a76abedd2be3926d6deba236a935c7f98abf9110	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	5.15
linux	linux_kernel	5.15
linux	linux_kernel	5.15
linux	linux_kernel	5.15
linux	linux_kernel	5.15
linux	linux_kernel	5.15

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/can/isotp.c"
          ],
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        },
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            },
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              "versionType": "semver"
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        }
      ],
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: isotp: isotp_sendmsg(): add result check for wait_event_interruptible()\n\nUsing wait_event_interruptible() to wait for complete transmission,\nbut do not check the result of wait_event_interruptible() which can be\ninterrupted. It will result in TX buffer has multiple accessors and\nthe later process interferes with the previous process.\n\nFollowing is one of the problems reported by syzbot.\n\n=============================================================\nWARNING: CPU: 0 PID: 0 at net/can/isotp.c:840 isotp_tx_timer_handler+0x2e0/0x4c0\nCPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.13.0-rc7+ #68\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1 04/01/2014\nRIP: 0010:isotp_tx_timer_handler+0x2e0/0x4c0\nCall Trace:\n \u003cIRQ\u003e\n ? isotp_setsockopt+0x390/0x390\n __hrtimer_run_queues+0xb8/0x610\n hrtimer_run_softirq+0x91/0xd0\n ? rcu_read_lock_sched_held+0x4d/0x80\n __do_softirq+0xe8/0x553\n irq_exit_rcu+0xf8/0x100\n sysvec_apic_timer_interrupt+0x9e/0xc0\n \u003c/IRQ\u003e\n asm_sysvec_apic_timer_interrupt+0x12/0x20\n\nAdd result check for wait_event_interruptible() in isotp_sendmsg()\nto avoid multiple accessers for tx buffer."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: can: isotp: isotp_sendmsg(): agregar verificaci\u00f3n de resultado para wait_event_interruptible() Usar wait_event_interruptible() para esperar la transmisi\u00f3n completa, pero no verificar el resultado de wait_event_interruptible() que puede ser interrumpido. Dar\u00e1 como resultado que el b\u00fafer TX tenga m\u00faltiples accesos y el proceso posterior interfiera con el proceso anterior. El siguiente es uno de los problemas informados por syzbot. ==================================================== =========== ADVERTENCIA: CPU: 0 PID: 0 en net/can/isotp.c:840 isotp_tx_timer_handler+0x2e0/0x4c0 CPU: 0 PID: 0 Comm: swapper/0 No contaminado 5.13.0 -rc7+ #68 Nombre del hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1 01/04/2014 RIP: 0010:isotp_tx_timer_handler+0x2e0/0x4c0 Seguimiento de llamadas:  ? isotp_setsockopt+0x390/0x390 __hrtimer_run_queues+0xb8/0x610 hrtimer_run_softirq+0x91/0xd0 ? rcu_read_lock_sched_held+0x4d/0x80 __do_softirq+0xe8/0x553 irq_exit_rcu+0xf8/0x100 sysvec_apic_timer_interrupt+0x9e/0xc0  asm_sysvec_apic_timer_interrupt+0x12/0x20 Agregar verificaci\u00f3n de resultado para wait_event_ interrumpible() en isotp_sendmsg() para evitar m\u00faltiples accesos al b\u00fafer tx."
    }
  ],
  "id": "CVE-2021-47457",
  "lastModified": "2026-06-17T04:17:31.150",
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          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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          "timestamp": "2024-05-22T15:53:56.304705Z",
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}

CVE-2021-47457 (GCVE-0-2021-47457)

Vulnerability from cvelistv5 – Published: 2024-05-22 06:19 – Updated: 2026-05-11 13:55

Title

can: isotp: isotp_sendmsg(): add result check for wait_event_interruptible()

Summary

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-05-22 15:53 UTC

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/053bc12df0d6097c1…
https://git.kernel.org/stable/c/a76abedd2be3926d6…
https://git.kernel.org/stable/c/9acf636215a6ce936…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e057dd3fc20ffb3d7f150af46542a51b59b90127 , < 053bc12df0d6097c1126d0e14fa778a0a8faeb64 (git) Affected: e057dd3fc20ffb3d7f150af46542a51b59b90127 , < a76abedd2be3926d6deba236a935c7f98abf9110 (git) Affected: e057dd3fc20ffb3d7f150af46542a51b59b90127 , < 9acf636215a6ce9362fe618e7da4913b8bfe84c8 (git)
Linux	Linux	Affected: 5.10 Unaffected: 0 , < 5.10 (semver) Unaffected: 5.10.76 , ≤ 5.10.* (semver) Unaffected: 5.14.15 , ≤ 5.14.* (semver) Unaffected: 5.15 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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        "metrics": [
          {
            "other": {
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                "id": "CVE-2021-47457",
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-22T15:53:56.304705Z",
                "version": "2.0.3"
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    "dateReserved": "2024-05-21T14:58:30.833Z",
    "dateUpdated": "2026-05-11T13:55:05.637Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

FKIE_CVE-2021-47457

CVE-2021-47457 (GCVE-0-2021-47457)

Tags

Sightings

Nomenclature